Portable honing device



Sept. 11, 1956 w. K. DOW 2,762,174

PORTABLE HONING DEVICE Filed April 20, 1954 INVENTOR. WALTER K. DOW

PORTABLE HONIN G DEVICE Walter K. Dow, Thompsonville, Conn. Application April'20, 1954, Serial No. 424,388 -Claims. (Cl. 51-1843) This invention relates to portable honing devices and has particular reference to a new and improved portable honingdevice which is relatively simple, compact and economical in construction, yet efiicient in operation.

An object of the invention is to provide a simple, cornpact and economical yet efficient portable honing device with which it is possible to convert almost any lathe, drill press, millingmachine, screw machine or other machine or device having a revolving spindle into a honing machine.

Another object is to provide a device of the type set forth which will eliminate the necessity for expensive single purpose honing machines as now usually required.

Another object is to provide a honing device which is simple enough in operation that it can be utilized by the most inexperienced operator to hone precise and accurate holes and wherein the pressure on the stone may be advanced without stopping the machine.

Another object is to provide a device of the type set forth which is so simple and low cost and which utilizes conventional mandrels, stones and adapters.

A further object is to provide a honing device wherein the advancing pressure of the honing stone or rate of honing pressure is determined by the operator by a sense of feel and which can be used for honing holes that must be honed in either a vertical or a horizontal position.

Other objects and advantages of the invention will be apparent from the following description taken in connection with the accompanying drawing. It will be understood that changes may be made in the details of construction and arrangement of parts without departing from the spirit of the invention as set forth in the accompanying claims, as the preferred form has been given by way of illustration only.

Referring to the drawing, wherein there is shown a side view partially in section of the honing device embodying the invention.

In the drawing, the device shown comprises the housing having the hollow portion 11 for receiving the mandrel adapter 12 which is locked in place by the set screw 13.

The body portion 10 has the drive shaft 14 which may be formed integral therewith or separately and rigidly attached thereto and which is adapted to be operatively connected to a lathe, drill press, milling machine, screw machine or other device having a rotary spindle.

Between body 10 and shaft 14 is the portion 15 having the threaded exterior portion 16 which is in threaded engagement with the threaded portion 17 on adjusting sleeve 18 and within portion 15 is the chamber 19 in which is positioned the coil spring 20 having its end 21 connected to pin 22 and its opposite end 23 connected to pin 24 which is connected to slide 25 which has the tubular extension 26 extending into bore 19 and spring 20 extends into said extension 26, as shown.

Pin 27 is positioned in an opening in a hole 28 in body portion 10 and is secured at one end 29 to slide 25. Its opposite end 30 is adapted to engage internal shoulder 31 2,762,174 Patented Sept. 11,1956

o'nadjusting sleeve 18 and to be retained in engagement with said shoulder and sleeve by means of coil spring 20.

Guard ring 32 is provided to prevent the operator from getting his fingers caught between housing 10"and adjusting sleeve 18 during operation of the unit while applying drag on sleeve 18, as hereinafter described.

Slide 25 has the grooved connecting end 33 for connection to the grooved end on wedge 34 which projects through adapter 12 in a slot'in mandrel 35 and has a wedge shaped end engaging the stone 36 for urging the stone outwardly into engagement with the surface being honed.

The adapter 12, mandrel 35, wedge 34-and'stone are generally similar tothat shown in Sunnen. Patent 1,989,831 and are generally available in most machine shops and can be readily. employed'inconnection with the device'of the present invention.

It is pointed out that the thread 16 on the shank portion 15 is a left hand thread and when the device is mounted in any spindle that rotates in opposite or right hand direction and adjusting sleeve 18 is' at its farthest open position, any drag or holding of sleeve 18 will cause it to advance toward body 12 thereby efifecting advance of slide 25 through actuation of pin 27 by sleeve18 against the force of spring 20 and thereby efiect advance of wedge 34 in its slot in mandrel 3 5, and the stone is advanced or retracted in the usualmanner as all honing machines except that the rate of advance or stone pressure is controlled by the operator through a sense of feel of his hand on sleeve 18 without stopping the operation of the machine. To retract the stone, the spindle must be stopped and sleeve 18 rotated in the opposite direction allowing spring 20 to draw back the wedge or drive 34.

From the foregoing, it will be seen that I have provided a simple, compact, economical and yet eflicient portable honing device that can readily take advantage of conventional adapters, mandrels and stones which the customer already has and whereby it is possible to convert any lathe, milling machine or other revolving spindle into a honing machine.

From the foregoing, it will be seen that I have provided new and improved means for obtaining all of the objects and advantages of the invention.

I claim:

1. In an adaptor for conversion of a general purpose machine tool into a honing machine, a body portion having driving means operatively connected thereto, said body portion having a bore adapted to support a tool holding means and having an externally threaded portion, a sleeve member in threaded engagement with said externally threaded portion, a slide mounted for sliding movement in said bore, spring means for moving said slide in one direction and a slideable member having one end engaging said slide and its opposite end adapted to engage said sleeve whereupon relative adjustment of said sleeve and body portion will effect simultaneous movement of said slide.

2. In a device of the character described, a body portion having driving means operatively connected thereto, said body portion having a bore adapted to support a tool holding means and having an externally threaded portion, a sleeve member in threaded engagement with said externally threaded portion, a slide mounted for sliding movement in said bore, spring means for moving said slide in one direction and a slideable member having one end engaging said slide and its opposite end adapted to engage said sleeve whereupon relative adjustment of said sleeve and body portion will eflect simultaneous movement of said slide and a tool operatively connected to said slide and adapted to be actuated by movement of said slide.

3. In a device of the character described, a body portion having driving means operatively connected thereto, said body portion having a bore adapted to support a'tool holding means and havingan externally threaded portion, a sleevememberin threadedengagement with said externally ,threaded portion, a slide mounted forrsliding movement in saidbore,'spri1 g'-meaus' for movingsaid slide in one direction and a slideable member having one end engaging said slide and its 'opposite end adapted 'to engage said sleeve whereupon relative adjustment of said sleeve and body portion will effect simultaneous movement of said slide, a tool and actuating means connected to said slide and moved upon movement of said slide to actuate a tool into engagement with a work piece.

'4. In an adapter for conversion of ageneral purpose machine tool into a honing machine, a body portion having driving 7 means operatively connected thereto; 3 said body portion'having a bore shaped to receive a tool holding means and having. an externally threaded portion, a sleeve member in threaded engagement with said externally threaded portion, a slide mounted for sliding movement in said bore, spring means for moving said slide in one direction and a slideable member having one end engaging said slide and its opposite end adapted to engage said sleeve whereupon relative adjustment of said sleeve and body portion will effect simultaneous movement of said slide, said slide being rigidly connected to said slideable member.

' ing means and having 5. In an adapter for conversion of a general purpose 4 machine tool into a honing machine, a body portion having driving means operatively connected thereto, said body portion having a bore shaped to receive a tool holdsleeve member in threaded engagement with said ex ternally threaded portion, a slide mounted for sliding movement in said bore, spring means for moving said slide in one direction and a slideable member having one end engaging said slide and its opposite end adapted toengage said sleeve whereupon relative adjustment of said sleeve and body portion will efiect simultaneous movement of said'slide, said threaded portion on said body portion comprising a left handed thread whereupon when said body is rotated in a righthand direction, drag or holding of said sleeve will cause it to advance and thereby advance said slide, and increase. the pressure on the stone without interfering with the operation of the machine.

References Cited in the file of this patent UNITED STATES PATENTS" an externally threaded portion, "a 

